In the week following a rally by thousands of Malaysians calling for electoral reforms, anger against the government's crackdown has been growing louder.<br /><br />Most of that has been channeled through social networking sites such as Facebook, where footage of the crackdown was posted.<br /><br />The growing use of the internet for information and opinion is posing an unprecedented challenge to the government.<br /><br />Al Jazeera's Azhar Sukri reports from Kuala Lumpur.